Type-writer.



B A. SPURGIN.

TYPE WRITER.

APPLIGATIOK PILBD JUNIJSO 191x.

Patenped Jan. 23, 1912.

2 SHEETBBIIBET 1.

witweoaco R. A. SPURGIN.

TYPE WRITER.

APPLICATION rum) JUNE so Patented Jail. 1912.

with the jshuttleshield .time roi'ide for"the proper tensioning of then bonflduring j nent from oneand useful Improvements in tensioning' the t' UNITED STATES nicmmn A. srumm, or LONDON,

PATENT OFFICE.

ENGLAND, ASSRGNOR TO THE HAMMOND TYPE- WRITER CO.

TYPE-WRITER Specification of Letters Patent.

' I Application filed nae 80, 1911. Serial No. 638,258.

To ull m'lom it may concern:

Be it known that I, RICHARD A. Srtinom,

a subject of Great Britain, residing London', England, have invented certammgw Typ -\Ynters, of which thegiollo'yving is .a specification.

Thisihizention relates to i?rpewr 1ters, and more particularly-tom'eans or llldln and typewriterf lmown -as ithe Hammond type-i writer. :0 1

writers it was found necessary to provide the ghuttlshield with ribbon? nice so as to secnre the of their: bondurmg theiimpres'a kln :practice, however it was found that-these ribbon-guidesot e shutq,- hie n ref'e eo n ered" 'y during the strikin 9f the shuttle-shield me A and the ribbon was consequen pressed in, the eorreetlb a The ob ect ofithis inven proyide an ordinary shuttle shie d 8n 1 1i the same spool. to the other;

'A ii -they,ob ect oii.the im r ention is to" r 'ld e h hi l m us i xse g g me movement of the control-devices and the ail-f tomat-ic eng'a ement and Increment of thesame. Fort llS: purpose my invention consists-"of means for tensioinng the ribbon of :1.

Hammond typewriter, and means for disengaging the controlling-hints. 1 he invention consists further inthe'cqntrolling means which eontinnallyi'presson, the ribbon unless brought V into disengageositiomj' .In t e accompanying drawings, Figure 1 shows a planr'viow of the invent onp'as ap-, plied to an improved form of the Hammond typewriter, Fig. 2 is a'iront-elevalion of -'rihbon, Fi E5 is detailed enlarged view,

the samefiFig3 isWplan-view of the parts shown in Fig. 1 with part of the members removed in order to show the controlling devices and the devices for moving the same, Fig. 4.is a detailed, vie) of the means for pressing the contr slling devices against the taken on line 5-5 of Fig. 4, and Fig 6 is also a detailed view, taken on line 6-6 or y not inn- ,1

is to do away Similar letters of reference indicate corresponding parts throughout the drawings.

. Patented Jan. 23,1912.

Referring more particularly to the draw jugs, the anvil 10, the shuttle 1.1, the hammer 12, and the ribbon-spool 13 are of the ordinal: construction and arrangement. The rib n passes from the spools between the-shuttle and hammer by'way of guidepart 17 of the t writer. The shuttleshield i8 is carrie m the usual manner by a frameltl comprising arms of curvedform fingers 14' and 15 arranged in pairs on arms. 16, which'are suitabl'y'secured to the framcto surround the anvil 10, being united at the front of the machine I and piyQtedib a bracket 20 on the rim or frame 21 snr'r'oim ing at the ribbonduring its unwinding. from its the typewriter, controllin r .dev icesflfl are provided,- one for each spool of ribbon: J The device consists of alever ivoted at 31' to the frame 21, and provide wltlhfll'l' extension 32 near the end of which a friction roller 33 is supported by brackets 34, bent from the lever 3:2.- A handle 35 forms an extension to the lcver-32. These parts are clearly shown in Figs 1, 2 and'3.-.

Fig. 2 shows how the lever 32 is bent at 32! in order to bring, the roll between the .Irifordrtd insure the proper tehsioning iull wound position during the operation of holding parts .13 of tlie spools 13. The devices 30 are spring-actuatedliy means of a spring 37 which-surroundsiaa in 38 which .is upset at 39 and screw-three ed at'40, engaging by its screw-threads at socket 41 below which is a'washer 42-11150 screwthreuded to englage the screw-threads of the pin 38. This I ange 42 iaproifided with a recess which is en afipd'lymrie end 37 0f tlie'i'sprmg 37 an t e frame-'QL-tlirough Which the pin 38 passes,- is,-prov ided with a slot or recess 21 which is gedby the other end of the spring" y means of this spring friction between the projection 32 by reason of the pressure of the s ring adapted to press a 21 by the screw {Fiend serves 6, the ends extensions of the move-tho -extensmns i5 ment 111 4s A sureof the roller servesjto hold t n is obvialed.

ement osition E? 43. P

only inoperative position,

. *tion rollers 33 press'on' the-ribbon during; its

. rib

and the arrangement just described, t-he normal action is to press the friction rollers against the ribbon of the spools.- Furthermore," the action-of the de-v vice just desciibed is such that .vvhen'the de' vices 30 are intended to be placed into their inoperative position as during the chdnging of the ribbon., then they are moved into the osition,'as s'howmin dotted lines marked B m the right-hand side of Fig. 3,'and by the 30 and lever maintained in that pos tion. In or er'to simultaneously move the devices into disena connecting device or which has its ends 44 inst extensions 45 of The ridge is provided with an extension 46,13 shown in Fig. 3, which is provided'with a. guide-slot 47, engaged by ,a guidepin 47*, the-end of wh1ch.exten- 81011 is provided with a' manipulating knob 48 An insert 46 is held agamstthe frame I to limit the movement of the extension 46. By the inwardpush ,on the knob 48 as shown in Fig. 44 of the bri e 43 engage the levers 32, and thereby inwardly and the friction rollers 33 away from the ribbon 49, which passes iromone spool to the other. Thus vvhenit isdesired to disenga friction rollers 33 froimthe ribbon, t e extensionflidis "knob 48 and the bridge presses fthe inward end of the levers 32 so asto bring about the disengagethe fricfionirollers f-When it 15 detop 15 provided the lever they are moved by ,hand over the projection 30 into the mnermost'dotteditlon B shown in.'the right-hand side 0, en the fric- T'and unwinding caused on one spool the other, the resistance the presiat pnrt of :the arm and shuttle in ition.

t fib tween tension and eveni My improved evice therefom' serves to secure-the efli Tent holding of the ribbon and im roves the'impress:on theflpaper, the

n is in good and evenshape. "Furthermore, the ordinary shnttle'shield may be usedwhich has not "the ribbonides and therefore tlie-conQictfotthe ri hon-guide with the shuttle,iyvli"e'iitthehanimer strikes,

'at one jtllc cxlcnslons of lhct on cktl-nsion at the other The operation of my im roved device is as follows? When ;the;1 na ine is used the devicesBQare p iIlStftllQrlhlKHl by means cube-nsprings and thereby the rib; bon is held in taut position durinfgflits wind from the in on ones lend unwindm 0t er. When, however, the r b n spools have to be removed from the machinev {or the nrposc of putting on a new ribbon, then the evices 3t) are moved to their inopennirc position shown by B and maintained in that position. If, however, slight changes or shifting of the ribbon have to be mad, then the knob 48 is moved and pressed inwardly so as to cause the bridge to engage ihe extensions of the deviccsBO, and disengage the friction rollers from the ribbons, an permit thereby the ready adjustment of the same.

My invention therefore consists in the arrnngcment of the tension devices whichoonsist of a pivoted lever-arm spring-actuated end and provided with a friction roller at the other. .And theinvention con sists further in the cod eration of the two devices with a. slidingridge 'to inove the devices simultaneously away from the rib" hon and theinvention consists more particularly in the Specific device which ispivoted at one end and spring-actuated at that end in a manner to press the roller supported by the lever arm against the ribbon andto he maintained in a certain position when the tension of the spring is overcome and when the friction roller is away froxn'rtho ribbon. I do not limit myself to the construction herein described, as various changes in the construction may be made without departing from the spirit and scope of'thei'n'vention.

Having thus described my invention, I

claim as new and desire to secure by Letters a tension device coinhavmg a. frictionnvot and an exten;

1, In a typewriter; prising u pivoted h-vcr roller at one side of the sion nt the other side of the pivot, a sliding piece adapted to engage the extension an move ll'w tension dcv and against the action of the spring and nmintain it in'tlml 'puslilml.

2. lo a lypmvrilcr, the combination of 'photcd tension devices each having an ex ltllhlull at one end and a frii-lion-mller at. the ollul' cud, a bridge adapted to engage cmion devices, a gnid slot on the ln'ldgv. and a nmnipulaling km for the bridge.

3. In iy |c, \\'rilcr, the combination'oi tension devices. each comprising a pivo lever with :i'friclion roller at one end and end, and a tension iuon! of engagement spring for pressing the-friction roller-nor-- in one direction.

Icvcr when pressed against lever in a fixed and a sliding bridge for engaging 13) 4. In a typewriter, the combination, of a In testimeny, hilt I claim the foregoing fixed projection and a pivoted lever having as my invention, I have signed my name in a friction roller at one end and ressed presence of (we subscribing Witnesses. normaib in one direction, ,the sairi lever} RICHARD A. SPURGIN.

5 being a apted to enga e the projection and "Witnesses:

to be held thereby wlen moved over the Jenn MURTAGH, projection. g L. J. MURPHY. 

